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  • × year_i:[1950 TO 1960}
  • × language_ss:"e"
  1. Bonn, G.S.: Relative usefulness of indexing and abstracting services (1950) 7.11 
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  2. Warheit, I.A.: ¬A study of coordinate indexing as applied to U.S. Atomic Energy Commission Reports (1955) 7.11 
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